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On the Intermediate-redshift Central Stellar Mass-Halo Mass Relation, and Implications for the Evolution of the Most Massive Galaxies Since z ~ 1

Shankar, Francesco and Guo, Hong and Bouillot, Vincent and Rettura, Alessandro and Meert, Alan and Buchan, Stewart and Kravtsov, Andrey and Bernardi, Mariangela and Sheth, Ravi and Vikram, Vinu and Marchesini, Danilo and Behroozi, Peter and Zheng, Zheng and Maraston, Claudia and Ascaso, Begoña and Lemaux, Brian C. and Capozzi, Diego and Huertas-Company, Marc and Gal, Roy R. and Lubin, Lori M. and Conselice, Christopher J. and Carollo, Marcella C. and Cattaneo, Andrea (2014) On the Intermediate-redshift Central Stellar Mass-Halo Mass Relation, and Implications for the Evolution of the Most Massive Galaxies Since z ~ 1. Astrophysical Journal Letters, 797 (2). Art. No. L27. ISSN 2041-8205. https://resolver.caltech.edu/CaltechAUTHORS:20150205-145150186

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Abstract

The stellar mass-halo mass relation is a key constraint in all semi-analytic, numerical, and semi-empirical models of galaxy formation and evolution. However, its exact shape and redshift dependence remain under debate. Several recent works support a relation in the local universe steeper than previously thought. Based on comparisons with a variety of data on massive central galaxies, we show that this steepening holds up to z ~ 1 for stellar masses M_(star)≳2 × 10^(11) M_☉. Specifically, we find significant evidence for a high-mass end slope of β ≳ 0.35-0.70 instead of the usual β ≾ 0.20-0.30 reported by a number of previous results. When including the independent constraints from the recent Baryon Oscillation Spectroscopic Survey clustering measurements, the data, independent of any systematic errors in stellar masses, tend to favor a model with a very small scatter (≾ 0.15 dex) in stellar mass at fixed halo mass, in the redshift range z < 0.8 and for M_(star) > 3 × 10^(11) M_☉, suggesting a close connection between massive galaxies and host halos even at relatively recent epochs. We discuss the implications of our results with respect to the evolution of the most massive galaxies since z ~ 1.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1088/2041-8205/797/2/L27DOIArticle
http://iopscience.iop.org/2041-8205/797/2/L27PublisherArticle
http://arxiv.org/abs/1411.2597arXivDiscussion Paper
ORCID:
AuthorORCID
Rettura, Alessandro0000-0002-5615-256X
Marchesini, Danilo0000-0001-9002-3502
Maraston, Claudia0000-0001-7711-3677
Lemaux, Brian C.0000-0002-1428-7036
Conselice, Christopher J.0000-0003-1949-7638
Carollo, Marcella C.0000-0003-1624-7609
Additional Information:© 2014 American Astronomical Society. Received 2014 August 21; accepted 2014 November 9; published 2014 December 9. F.S. acknowledges Naresh Shankar, Jeremy Tinker, David Weinberg, Federico Marulli, and Surhud More for several interesting and helpful discussions. V.B. is supported financially by the National Research Foundation of South Africa. D.M. acknowledges the support of the Research Corporation for Science Advancement’s Cottrell Scholarship. This work is based on data obtained with the Spitzer Space Telescope, which is operated by the Jet Propulsion Laboratory (JPL), California Institute of Technology (Caltech), under a contract with NASA. We thank the referee for a constructive report that significantly improved the presentation of the results.
Funders:
Funding AgencyGrant Number
National Research Foundation (South Africa)UNSPECIFIED
Cottrell Scholar of Research CorporationUNSPECIFIED
NASA/JPL/CaltechUNSPECIFIED
Subject Keywords:cosmology: theory; galaxies: evolution; galaxies: statistics
Issue or Number:2
Record Number:CaltechAUTHORS:20150205-145150186
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20150205-145150186
Official Citation:On the Intermediate-redshift Central Stellar Mass-Halo Mass Relation, and Implications for the Evolution of the Most Massive Galaxies Since z ~ 1 Francesco Shankar et al. 2014 ApJ 797 L27
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:54460
Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:05 Feb 2015 23:21
Last Modified:09 Mar 2020 13:19

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